Seat belt retractor with adaptive function and automobile seat device

Abstract

The application discloses a seat belt retractor with adaptive function and a car seat device, and aims at solving the problem that the existing seat belt SAMS retractor cannot be unlocked in the adaptive function implementation process by adding an unlocking mechanism. The application comprises a frame assembly, a belt-sensitive assembly, a car-sensitive assembly, a mechanical end assembly and an unlocking mechanism which are installed on the same side of the frame assembly. The unlocking mechanism comprises an actuator, an execution part, a controller module and a seat adjustment sensor. When the seat back is reclined, the actuator is controlled by the controller module, the execution part is displaced, the fixed claw of the locking device is quickly separated from the car-sensitive assembly, and the adaptive function is restored, so that the comfort and use experience of the passenger are improved, and the overall performance of the product and the user satisfaction are also improved.

Description

Technical Field

[0001] This application relates to the field of automotive equipment technology, specifically to a seat belt retractor with adaptive function and an automotive seat device. Background Technology

[0002] The fully mechanical SAMS retractor is a common safety device. Its internal locking mechanism uses a webbing strip to achieve the locking function, which effectively protects occupants under normal circumstances. However, in certain scenarios, such as when adjusting the seat back, some shortcomings arise: the webbing remains extended, causing the locking mechanism to remain continuously locked. This continuous locking prevents the retractor from self-adapting, leading to angular locking of the sensitive component and further affecting its normal operation. Because the retractor's self-adaptive performance is compromised, it cannot automatically adjust the webbing tension according to actual conditions, reducing its applicability in special scenarios. This also causes discomfort for occupants, impacting the user experience and reducing overall product performance and user satisfaction. Utility Model Content

[0003] Therefore, this application provides a seat belt retractor and car seat device with adaptive function, which solves the problem that existing seat belt retractors cannot unlock during the implementation of adaptive function by adding an unlocking mechanism.

[0004] To achieve the above objectives, this application provides the following technical solution:

[0005] In a first aspect, a seatbelt retractor with adaptive function includes: a frame assembly and a seatbelt-sensitive component, a vehicle-sensitive component, a mechanical end assembly, and an unlocking mechanism mounted on the same side of the frame assembly; the frame assembly includes a frame body and a spindle mounted on the frame body, and the seatbelt-sensitive component is mounted on the spindle;

[0006] The mechanical end assembly is disposed outside the frame body, and the mechanical end assembly includes a locking device and a vehicle-sensitive mechanism rod. The belt-sensitive assembly is associated with the vehicle-sensitive assembly through the vehicle-sensitive mechanism rod, and the vehicle-sensitive assembly is also connected to the bushing at the end of the spindle through the locking device.

[0007] The unlocking mechanism includes an actuator, an actuator, and a controller module. One end of the actuator is connected to the actuator, and the other end of the actuator is associated with the locking device. The controller module is connected to the actuator, so that the actuator, under the control of the actuator, separates the locking device from the vehicle sensitive component.

[0008] Optionally, the actuator is connected to the controller module via a wiring harness.

[0009] It also includes a seat adjustment sensor, which is connected to the controller module.

[0010] Optionally, the actuator includes a connecting rod connected to the actuator, the connecting rod being connected to a push-pull portion, the push-pull portion being used to engage with the central position of the locking device.

[0011] Optionally, the actuator is a motor, and the motor is connected to one end of the actuator via a gear and rack structure.

[0012] Optionally, the actuator is an electromagnet, and one end of the actuator is connected to the core of the electromagnet via a connector.

[0013] Optionally, the actuator is one of an electromagnet, a motor, a hydraulic or pneumatic mechanism.

[0014] Optionally, the vehicle-sensing component is fixed to the outside of the frame body by a fixing seat; the end of the locking device is provided with a fixing claw;

[0015] The vehicle-sensing component includes a sensing mechanism rod, one end of which is connected to the vehicle-sensing mechanism rod, and the other end of which is connected to a steel ball. The steel ball is installed in a steel ball seat, and the steel ball seat is provided with a counterweight and teeth that mesh with the fixed claw.

[0016] Optionally, the mechanical end assembly further includes the bushing, the bushing is provided with a first connector on its outside, and the connecting key between the bushing and the first connector is a spindle shaft, and the locking device moves with the spindle shaft.

[0017] Optionally, the mechanical end assembly further includes a positioning cover and an outer cover. The positioning cover is connected to the frame body and is located between the sensitive component and the locking device. The outer cover is connected to the frame body and is located outside the mechanical end assembly and the sensitive component, serving a sealing and protective function.

[0018] In a second aspect, an automotive seat assembly includes: a seat and a seatbelt SAMS retractor mounted on the seat, characterized in that the seatbelt SAMS retractor employs the aforementioned seatbelt retractor with adaptive function.

[0019] Compared with the prior art, this application has at least the following beneficial effects:

[0020] 1. Based on further analysis and research of existing technical problems, this application provides a seat belt retractor with adaptive function. Through the setting of the unlocking mechanism, when the seat adjustment sensor detects a change in the angle of the seat back, it sends the signal to the controller module. The controller module controls the actuator, causing the actuator to move and drive the fixing claw of the locking device to quickly disengage from the vehicle-sensitive component, releasing the locking state and restoring the adaptive function of the retractor. This ensures that the retractor can still work normally in special scenarios, improving the comfort and user experience of the occupants. It not only improves the overall performance of the product but also enhances user satisfaction, while improving the reliability and economy of the system.

[0021] 2. This application also provides an automotive seat device and an unlocking method for a seat belt retractor with adaptive function, both of which use the aforementioned seat belt retractor with adaptive function; when the seat back is adjusted, the retractor rotates at an angle relative to the horizontal plane at 40° intervals or when the angle change stops, the controller module controls the actuator to execute an operation command at least once, so that the unlocking device unlocks at least once and resets. In this way, when the zero-gravity seat is adjusted, the retractor can restore its adaptive function and thus achieve normal operation. Attached Figure Description

[0022] To more intuitively illustrate the prior art and this application, exemplary drawings are provided below. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing this application; for example, based on the technical concept disclosed in this application and the exemplary drawings, those skilled in the art are able to easily make conventional adjustments or further optimizations to the addition / reduction / classification, specific shapes, positional relationships, connection methods, size ratios, etc. of certain units (components).

[0023] Figure 1 A schematic diagram of the structure of a seatbelt retractor with adaptive function provided in one embodiment of this application. Figure 1 ;

[0024] Figure 2 A schematic diagram of the structure of a seatbelt retractor with adaptive function provided in one embodiment of this application. Figure 2 ;

[0025] Figure 3 An exploded view of a seatbelt retractor with adaptive function provided in one embodiment of this application;

[0026] Figure 4 for Figure 1 Schematic diagram of the structure of CRRC's sensitive components Figure 1 ;

[0027] Figure 5 for Figure 1 Schematic diagram of the structure of CRRC's sensitive components Figure 2 ;

[0028] Figure 6 for Figure 1 A schematic diagram of the connection between the central bushing and the locking device;

[0029] Figure 7 for Figure 1 A schematic diagram of the unlocking mechanism;

[0030] Figure 8 for Figure 1 Schematic diagram of the connection between the unlocking mechanism and the locking device Figure 1 ;

[0031] Figure 9 for Figure 1 Schematic diagram of the connection between the unlocking mechanism and the locking device Figure 2 ;

[0032] Figure 10 This is a circuit block diagram provided for one embodiment of this application.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Frame components; 11. Frame body; 12. Mandrel;

[0035] 2. Sensitive components;

[0036] 3. Car-sensitive component; 31. Sensing mechanism rod; 32. Steel ball; 33. Steel ball seat; 331. Gear; 34. Counterweight;

[0037] 4. Mechanical end assembly; 41. Bushing; 42. Car-sensor mechanism rod; 43. Locking device; 431. Fixing claw; 44. Positioning cover; 45. Outer cover; 46. Fixing seat; 47. First connecting piece;

[0038] 5. Unlocking mechanism; 51. Actuator; 52. Executor; 521. Connecting rod; 522. Push-pull part; 53. Controller module; 54. Seat adjustment sensor; 55. Wiring harness wire. Detailed Implementation

[0039] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] In the description of this application: unless otherwise stated, "a plurality of" means two or more. The terms "first," "second," "third," etc., in this application are intended to distinguish the objects referred to and do not have any special meaning in terms of technical connotation (e.g., they should not be construed as an emphasis on importance or order). Expressions such as "comprising," "including," and "having" also mean "not limited to" (certain units, components, materials, steps, etc.).

[0041] The terms used in this application, such as "upper," "lower," "left," "right," and "middle," are generally used to indicate the general relative positional relationship for the purpose of intuitive understanding by referring to the accompanying drawings, and are not absolute limitations on the positional relationship in the actual product.

[0042] One embodiment of this application, such as Figures 1-10 As shown, a seat belt retractor with adaptive function includes: a frame assembly 1 and a belt-sensitive assembly 2, a vehicle-sensitive assembly 3, a mechanical end assembly 4, and an unlocking mechanism 5 mounted on the same side of the frame assembly 1.

[0043] The frame assembly 1 includes a frame body 11 and a spindle 12 mounted on the frame body 11. The mechanical end assembly 4 is disposed outside the frame body 11, and the sensitive assembly 2 is mounted on the spindle 12 and corresponds to the inner side of the mechanical end assembly 4.

[0044] The mechanical end assembly 4 includes a bushing 41, a car-sensitive mechanism rod 42, a locking device 43, a positioning cover 44, and an outer cover 45. The belt-sensitive assembly 2 is associated with the car-sensitive assembly 3 via the car-sensitive mechanism rod 42, and the car-sensitive assembly 3 is also connected to the bushing 41 at the end of the spindle 12 via the locking device 43. The bushing 41 is located at the end of the spindle 12, and a first connecting member 47 is provided on the outside of the bushing 41. The connecting key between the bushing 41 and the first connecting member 47 is called the spindle shaft. The locking device 43 moves with the spindle shaft. The positioning cover 44 is connected to the frame body 11 and is located between the belt-sensitive assembly 2 and the locking device 43. The positioning cover 44 also has a first opening for the bushing 41 to pass through and a second opening for the movement of the car-sensitive mechanism rod 42. The outer cover 45 is connected to the frame body 11 and is located at the outermost part of the mechanical end assembly 4 and the car-sensitive assembly 3, serving as a sealing and protective function.

[0045] The unlocking mechanism 5 includes an actuator 51, an actuator 52, a controller module 53, and a seat adjustment sensor 54. One end of the actuator 52 is connected to the actuator 51, and the other end of the actuator 52 is associated with the locking device 43. The controller module 53 is connected to the actuator 51, so that the actuator 52 separates the locking device 43 from the vehicle sensitive component 3 under the control of the actuator 51, thereby achieving unlocking.

[0046] Preferably, the unlocking mechanism 5 further includes a seat adjustment sensor 54, which is connected to the controller module 53.

[0047] More preferably, the actuator 51 is connected to the controller module 53 via a wiring harness 55; the relationship between the seat adjustment sensor 54, the controller module 53 and the actuator 51 is as follows: the output terminal of the seat adjustment sensor 54 is connected to the input terminal of the controller module 53, and the output terminal of the controller module 53 is connected to the input terminal of the actuator 51.

[0048] The function of the seat adjustment sensor 54 is to detect the adjustment signal of the seat back system, specifically the change in seat rotation angle, and send the signal to the controller module 53. The function of the controller module 53 is to receive the motor rotation signal of the seat back adjustment, calculate the adjustment angle, detect the back stop signal, and output the command to the actuator 51. ① The program execution setting angle signal is adjustable, ensuring that the signal is achieved at least once within a 40° back adjustment angle. ② The output command requires two actions: opening and closing. The function of the actuator 51 is to receive the command from the controller and execute the drive action, causing the actuator 52 to quickly generate displacement. The function of the actuator 52 is to cause the locking device 43 to quickly disengage from the vehicle sensitive component 3 under the action of the actuator 51, thereby unlocking, and then quickly return to its initial state for the next cycle.

[0049] Preferably, the vehicle-sensitive component 3 is fixed to the outside of the frame body 11 by the fixing seat 46; the locking device 43 is provided with a fixing claw 431 at its end;

[0050] The vehicle-sensitive component 3 includes a sensitive mechanism rod 31, one end of which is connected to the vehicle-sensitive mechanism rod 42, and the other end of which is connected to a steel ball 32. The steel ball 32 is installed in a steel ball seat 33, which provides a rolling track for the steel ball 32. The steel ball seat 33 is provided with a counterweight 34 and teeth 331 that mesh with the fixed claw 431.

[0051] Preferably, such as Figures 7-9 As shown, the actuator 52 includes a connecting rod 521 connected to the actuator 51. The connecting rod 521 is connected to the push-pull part 522, which has a "U"-shaped structure. The U-shaped groove of the push-pull part 522 is used to cooperate with the middle position of the locking device 43, thereby ensuring that when the actuator 51 performs the driving action, the actuator 52 effectively drives the locking device 43 to generate displacement, thereby causing the fixing claw 431 at the end of the locking device 43 to separate from the teeth 331 on the steel ball seat 33, releasing the locking state and restoring the adaptive function of the retractor.

[0052] It should be noted here that the specific structure of the actuator 52 is not limited and can be designed and adjusted according to actual requirements, as long as it can meet the function of driving the locking device 43 to disengage from the vehicle-sensitive component 3. For example, in other embodiments, the structure of the pushing and pulling part 522 can also be in the shape of a "square", or other shapes.

[0053] Preferably, the actuator 51 is one of an electromagnet, a motor, a hydraulic or pneumatic mechanism, etc., and the specific type can be selected according to actual application requirements:

[0054] When the actuator 51 is a motor, the motor is connected to one end of the actuator 52 through a gear-rack structure. Specifically, the output shaft of the motor is connected to the gear, and a rack is provided at one end of the actuator 52, and the rack is connected to the gear.

[0055] When the actuator 51 is an electromagnet, one end of the actuator 52 is connected to the iron core of the electromagnet through a second connecting member, and the second connecting member ensures that the actuator 52 can move with the iron core.

[0056] This application also provides an automotive seat device, including: a seat and a seat belt SAMS retractor installed on the seat, and the seat belt SAMS retractor adopts the above-mentioned seat belt retractor with an adaptive function.

[0057] The working principle of the above embodiments:

[0058] When the seat system adjusts the seat back to recline, the seat adjustment sensor 54 will detect the signal of the seat back adjustment and send the signal to the controller module 53. The controller module 53 judges whether the angle of the seat back adjustment exceeds the set value according to the received signal. If it is determined that the angle change of the seat back adjustment reaches the set value each time or the angle change action stops, the controller module 53 controls the actuator 51 to work and drives the actuator 52 to execute at least one operation command, so that the actuator 52 drives the locking device 43 to quickly disengage from the vehicle-sensitive component 3, and the locking state is released;

[0059] Specifically, it includes the following steps:

[0060] Step 1: In the initial state, the webbing is pulled out, and the locking device 43 locks the vehicle-sensitive component 3; specifically, the fixed claw 431 at the end of the locking device 43 and the teeth on the steel ball seat 33 are in a locked state;

[0061] Step 2: The seat adjustment sensor 54 detects the seat back adjustment, specifically by detecting the rotation angle of the retractor on the seat back relative to the horizontal plane, and sends the signal to the controller module 53. The controller module 53 is used to determine whether the seat back adjustment angle exceeds the set value based on the received signal. When the seat back is adjusted, the retractor installed on the seat back will change its angle relative to the horizontal plane. The controller module 53 controls the actuator 51 to work each time the value of the angle change reaches the set value or the angle change action stops.

[0062] Step 3: When actuator 51 receives the instruction and executes the driving action, it drives actuator 52 to quickly generate displacement and executes at least one operation command;

[0063] Step 4: The actuator 52 drives the locking device 43 to quickly disengage from the vehicle sensitive component 3, and the locking state is released; specifically, the push-pull part 522 of the actuator 52 drives the fixing claw 431 to quickly disengage from the teeth on the steel ball seat 33, so that the locking state between the two is released.

[0064] Step 5: After the locking device 43 is released, the controller module 53 controls the actuator 51 to execute the reset command, quickly restoring it to the initial state in preparation for the next execution cycle.

[0065] The aforementioned setting is specifically 40°, and each 40° change or cessation of angle constitutes one cycle. When the seat back is adjusted, the actuator 51 executes an operation command at least once for every 40° rotation of the retractor relative to the horizontal plane, causing the unlocking device 43 to unlock and reset at least once. In this way, when the zero-gravity seat is adjusted, the retractor can restore its adaptive function and thus achieve normal operation.

[0066] The technical features of the above embodiments can be combined in any way (as long as there is no contradiction in the combination of these technical features). For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written should also be considered to be within the scope of this specification.

Claims

1. A seatbelt retractor with adaptive function, characterized in that, include: The frame assembly includes a sensor component, a vehicle-mounted sensor component, a mechanical end component, and an unlocking mechanism, all mounted on the same side of the frame assembly. The frame assembly includes a frame body and a spindle mounted on the frame body, with the sensor component mounted on the spindle. The mechanical end assembly is disposed outside the frame body, and the mechanical end assembly includes a locking device and a vehicle-sensitive mechanism rod. The belt-sensitive assembly is associated with the vehicle-sensitive assembly through the vehicle-sensitive mechanism rod, and the vehicle-sensitive assembly is also connected to the bushing at the end of the spindle through the locking device. The unlocking mechanism includes an actuator, an actuator, and a controller module. One end of the actuator is connected to the actuator, and the other end of the actuator is associated with the locking device. The controller module is connected to the actuator, so that the actuator, under the control of the actuator, separates the locking device from the vehicle sensitive component.

2. The seatbelt retractor with adaptive function according to claim 1, characterized in that, The actuator is connected to the controller module via a wiring harness. It also includes a seat adjustment sensor, which is connected to the controller module.

3. The seatbelt retractor with adaptive function according to claim 1, characterized in that, The actuator includes a connecting rod connected to the actuator, the connecting rod being connected to a push-pull part, the push-pull part being used to engage with the middle position of the locking device.

4. The seatbelt retractor with adaptive function according to claim 1, characterized in that, The actuator is a motor, and the motor is connected to one end of the actuator via a gear and rack structure.

5. The seatbelt retractor with adaptive function according to claim 1, characterized in that, The actuator is an electromagnet, and one end of the actuator is connected to the core of the electromagnet via a connector.

6. The seatbelt retractor with adaptive function according to claim 1, characterized in that, The actuator is one of an electromagnet, a motor, a hydraulic or pneumatic mechanism.

7. The seatbelt retractor with adaptive function according to claim 1, characterized in that, The vehicle-mounted component is fixed to the outside of the frame body by a fixing seat; the locking device is provided with a fixing claw at its end; The vehicle-sensing component includes a sensing mechanism rod, one end of which is connected to the vehicle-sensing mechanism rod, and the other end of which is connected to a steel ball. The steel ball is installed in a steel ball seat, and the steel ball seat is provided with a counterweight and teeth that mesh with the fixed claw.

8. The seatbelt retractor with adaptive function according to claim 1, characterized in that, The mechanical end assembly also includes the bushing, the bushing is provided with a first connector on its outside, and the connecting key between the bushing and the first connector is a spindle shaft, and the locking device moves with the spindle shaft.

9. The seatbelt retractor with adaptive function according to claim 8, characterized in that, The mechanical end assembly also includes a positioning cover and an outer cover. The positioning cover is connected to the frame body and is located between the sensitive component and the locking device. The outer cover is connected to the frame body and is located outside the mechanical end assembly and the sensitive component, serving a sealing and protective function.

10. A car seat assembly, comprising: A seat and a seatbelt SAMS retractor mounted on the seat, characterized in that the seatbelt SAMS retractor is a seatbelt retractor with adaptive function as described in any one of claims 1-9.

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